Much GST Refund explained: this guide covers what it means, who it applies to, the step-by-step process, documents required, fees, due dates and penalties in India — so you can stay compliant with confidence and avoid costly mistakes.
The honest answer is: it depends on why the money is refundable. Some refunds give back exactly what you paid. Others give back only a formula share of the credit in your ledger. And every claim can be trimmed by ledger balances, missing invoices, the minimum amount rule or the unjust-enrichment test. This page shows how to estimate your figure, category by category.
For exports with IGST paid, you get the IGST paid on the export. For exports or SEZ supplies under LUT and for inverted duty, you get a formula share of ITC under Rule 89(4) or Rule 89(5), capped at the least of the formula amount and your credit-ledger balances. For excess cash-ledger balance or excess tax paid, you get the excess itself. Zero-rated claims can get 90% provisionally (s.54(6)). No refund under ₹1,000 per tax head is paid (s.54(14)), except for an excess cash-ledger balance.
Step 1: find your category
| Refund category | What you get back | Basis |
|---|---|---|
| Export of goods with IGST paid | IGST paid on the export | Rule 96: the shipping bill is the application |
| Export of services with IGST paid | IGST paid | RFD-01 |
| Export or SEZ supply under LUT/bond | Share of ITC | Rule 89(4) formula |
| Inverted duty structure | Share of ITC on inputs | Rule 89(5) formula |
| Excess balance in the cash ledger | The excess balance | s.49(6), RFD-01 |
| Excess tax paid, tax on a cancelled supply | The amount paid in excess | s.54(1), subject to unjust enrichment |
| Deemed exports | Tax paid on the supply | RFD-01 by recipient or supplier |
If you are not sure which box you are in, types of GST refund categories walks through each. For the formula categories, the quickest estimate is the GST refund calculator.
Step 2: estimate the figure (illustrations)
A. Export of goods with IGST paid
You export goods worth ₹50,00,000 and pay IGST at, say, 18% (check the rate for your goods): ₹9,00,000. Refund = ₹9,00,000, credited through ICEGATE once the shipping bill, GSTR-1 Table 6A and GSTR-3B agree. No formula applies. If they do not agree, the amount does not move at all; see IGST refund not received.
B. Export under LUT
Zero-rated turnover ₹60,00,000; Adjusted Total Turnover ₹1,00,00,000; Net ITC (inputs + input services) ₹10,00,000.
Refund = 60,00,000 × 10,00,000 ÷ 1,00,00,000 = ₹6,00,000, the share of credit that relates to exports. The other ₹4,00,000 relates to domestic sales and stays in your ledger for use. Provisional refund at 90% = ₹5,40,000. The full working is in GST refund calculation for export without payment.
C. Inverted duty
Inverted turnover ₹80,00,000 = ATT; output tax ₹4,00,000; ITC on inputs ₹6,00,000; ITC on input services ₹2,00,000.
- 80,00,000 × 6,00,000 ÷ 80,00,000 = ₹6,00,000
- 4,00,000 × (6,00,000 ÷ 8,00,000) = ₹3,00,000
- Maximum refund = ₹3,00,000
Credit on input services and capital goods is not refunded here. See Net ITC meaning in the GST refund formula.
D. Excess cash-ledger balance
You deposited ₹2,50,000 by challan and used ₹1,70,000. Refund = ₹80,000. Circular 166/22/2021-GST says the two-year limit does not apply to this category, and the ₹1,000 minimum does not either.
E. Excess tax paid
You reported ₹3,00,000 extra output tax in GSTR-3B and cannot adjust it in a later return. Refund = ₹3,00,000, provided you show the tax was not passed on to the customer.
Step 3: apply the caps that reduce the amount
| What cuts the refund | How it works |
|---|---|
| Least-of-three (formula categories) | Refund = lowest of the formula amount, the ledger balance at period end and the ledger balance on filing day |
| 1.5× cap on export value | Export goods value is capped at 1.5 times the value of like goods sold domestically |
| ITC not in GSTR-2B | Excluded under Circular 135/05/2020-GST |
| Capital goods and blocked credit | Never part of Net ITC |
| Minimum amount | No refund under ₹1,000, applied per tax head (Circular 125/44/2019-GST); not applicable to excess cash-ledger balance |
| Unjust enrichment | For excess tax and similar claims, s.54(8) requires proof that tax was not passed on; a CA certificate is needed where the claim exceeds ₹2 lakh |
| Adjustment against dues | The officer can adjust an outstanding demand from the refund, shown in RFD-06 |
| Time limit | Two years from the relevant date; a late claim gets nothing |
Illustration of the least-of-three cut. Your LUT formula gives ₹6,00,000, but you used credit for later months, so the ledger on filing day shows ₹4,20,000. Refund claimable: ₹4,20,000. Filing before using that credit would have protected the other ₹1,80,000.
Step 4: when you will actually see it
Provisional refund for zero-rated supplies is due in RFD-04 within seven days of acknowledgement, on system risk evaluation, under Rule 91(2) as substituted w.e.f. 01.10.2025. The final order is due within 60 days of a complete application (s.54(7)). Beyond that, interest at 6% p.a. runs under s.56; see GST refund interest calculation. Timelines are covered in how many days a GST refund takes.
Want a firm number before you file?
An estimate is easy; the claimable amount depends on how the returns, 2B and ledger actually line up for the period. We work out the admissible figure period by period and tell you where the refund is being lost. Try the GST refund calculator first, then take it further through the GST refund hub.
Key takeaways
- Refunds of tax paid (IGST on exports, excess tax, cash ledger) return the amount paid.
- LUT/SEZ and inverted-duty refunds return only a formula share of ITC.
- The formula amount is then capped by your ledger balances, so file before using the credit.
- Missing 2B credit, capital goods, the 1.5× cap and the ₹1,000 per-head minimum all cut the figure.
- Zero-rated claims can get 90% provisionally; delayed final refunds carry 6% interest.
Read next
- GST refund formula explained: Rule 89(4) and 89(5)
- GST refund calculation in Excel
- GST refund eligibility checklist
- Refund of excess balance in the electronic cash ledger
Disclaimer: Positions stated as on 30 September 2026, based on the CGST Act and Rules as amended, the Finance Act 2026, and the ICAI Handbook on Refunds under GST (January 2026). Verify current notifications before filing.